var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var Message = require('./routes/message');

//express-session
var session = require('express-session');
var NedbStore = require('express-nedb-session')(session);

//session中间件
const sessionMiddleware = session({
    store: new NedbStore({filename: './sessions/nedb-Session'}),
    secret: 'mouse',
    cookie: {maxAge: 120000}
})

var index = require('./routes/index');
var users = require('./routes/users');

var app = express();
var server = require('http').Server(app);
var io = require('socket.io')(server);

var iosession = require('express-socket.io-session')(sessionMiddleware);

io.use(iosession);
io.on('connection', function(socket){

    socket.on("say",async data=>{
        const user = socket.handshake.session.user;
        const message = new Message({
            ms:data,
            createTime: new Date(),
            creator: user.loginname
        });
        await message.save();
        socket.handshake.session.save();
        io.emit("newsay");
    })
})

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use(sessionMiddleware);

app.use('/', index);
app.use('/users', users);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  var err = new Error('Not Found');
  err.status = 404;
  next(err);
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = {app,server};
